Coil taping machine



Feb. 13, 1934. E NYDER 1,946,717

COIL TAPING MACHINE Filed Feb. 17, 1930 10 Sheets-Sheet 2 INVENTOR Feb.13, 1934. SNYDER 1,946,717

con TAPING MACHINE Filed Feb. 17, 1930 10 She'etsSheet s M W INVENTOR.

ATTORNEY.

Feb. 13, 1934. E D R 1,946,717

COIL TAPING MACHINE Filed Feb. 17, 1930 10 Sheets-Sheet 4 d 4 j QINVENTOR.

BY WATTORNEY.

Feb. 13,1934. 5, SNYDER 1,946,717

con. TAPING MACHINE Filed Feb. 17, 1950 lo Sheets-Sheet 5 W INVENTOR.

BY Q% ATTORNEY.

Feb. 13, 1934. E. SNYDER I l,94 6;7l7

COIL TAPING MACHINE Filed Feb. 17, 1930 10 Sheets-Sheet 6 fillllu' KM 6%INVENTQR.

5 A TTORNEY.

Feb. 13, 1934. E. SNYDER 1,946,717

COIL TAPING MACHINE Filed Feb. 17, 1930 10 She ets-Sheet 7 W W INVENTOR.

BY WWATTORNEY.

Feb. 13, 1934. E SNYDER con. TAPING MACHINE Filed Feb. 17, 1930 10Sheets-Sheet 9 Q5 INVENTOR ATTORNEY Feb. 13, 1934.

E. SNYDER 1,946,717

COIL TAPING MACHINE Filed Feb. 17, 1930 10 Sheets-Sheet 1O INVENTOR.

j7/% A TTORNEY.

Patented Feb. 13, 1934 UNITED STATES PATENT OFFICE COIL TAPIN G MACHINEApplication February 17, 1930. Serial No. 429,090

11 Claims.

This invention relates to coil taping machines for expeditiouslyapplying coverings to electrical coils which coverings are made of tapewound about the coil in spiral formation to hold the layers and turns ofthe strand forming the coil together.' It is an object of the inventionto provide an improved coil-taping machine of the kind referred to.Other objects and advantages of the invention will appear hereinafter.

An illustrative embodiment of the invention selected merely fordescriptive purposes is shown in the accompanying drawings, in which:

Fig. 1 is a front perspective view of the coiltaping machine;

Fig. 2 is an end view thereof;

Fig. 3 is a bottom plan view showing the relative arrangement ofportions of the driving and controlling devices of the machine;

Fig. 4 is a side elevation to enlarged scale of 20 the coil-tapingmachine and an electrical switch related thereto, which form a part ofthe machine;

Fig. 5 is a rear elevation, also to enlarged scale of the shearingappliance and its actuating means which are embodied in the machine;

Fig. 6 is a side elevation of the shearing appliance including a switchfor controlling same;

Fig. 7 is a bottom plan view to enlarged scale of the controlling devicefor the shearing appliance;

Fig. 8 is another bottom plan view to still larger scale showing aportion of the controlling device for the shearing appliance, partsbeing broken away;

Fig. 9 is a rear elevation of the controlling device for the shearingappliance;

Fig. 10 is a chart showing diagrammatically the arrangement of theconnections for the electrically operated parts of the machine; and

Fig. 11 is a plan view of the relay switch indi cated in Fig. 10, theswitch being shown in closed position.

Among the features embodied in the coil-taping machine disclosed in thedrawings are the following: An automatically operated shearing appliancefor cutting the tape that is supplied to the taping appliance intopredetermined lengths; an adjustable controller for the shearingappliance, operatively related with the taping appliance, whereby thelength of the tape cut by the shearing appliance may be varied asrequired for different sizes of coils; an arrester related to the tapingappliance whereby the shuttle of the taping appliance is stopped at adefinite position in its race-way to facilitate insertion of electricalcoils into the taping appliance and their removal therefrom,respectively before and after the tape applying operation; andelectrically operated controlling means for said arrester and shearingappliance, which means are related also with the controller for saidshearing appliance, whereby said controller is reset to the point ofcommencement of the its cycle of operation when said arrester isactuated.

The coil taping appliance Referring to the drawings, and moreparticularly to Figs. 1, 2 and 4, the taping appliance includes a gearhousing 1 mounted upon the top 2 of a bench 3, the housing having at itsupper end a circular race-way 4 in which is disposed a rotatable annularshuttle 5, the race-way and the shuttle being provided with gaps 6 and7, respectively, to permit insertion of a coil, (not shown) in properposition to receive the tape from the shuttle in the customary manner asthe shuttle is rotated in its race-way. Conveniently the shuttle isactuated by gearing 8, (Fig. 3) that is driven by a chain and sprocketmechanism 9 connected with a clutch member 10 which is rotatablysupported beneath the top 2 of the bench by a hanger 11. The clutchmember 10 is actuated by a driving pulley 13 that frictionally engagesthe clutch member, there being a clutch lever 14 for throwing thedriving pulley into engagement with the clutch member, said leverconveniently being controlled by a pedal 15 attached thereto by aconnection 16.

The taping appliance preferably has in connection therewith a brakemechanism 1'7 controlled by a lever 18 which may be moved into action byapplying pressure with the knee by the operator, which brake mechanismconveniently is employed to apply tension to the tape as it is woundupon a coil.

The shearing appliance Upon the top 2 of the bench is positioned ashearing appliance 19 and an actuating means therefor. The shearingappliance (Figs. 5 and 6) consists of a standard 20, a guide 21 andcutting bar 22 fixed thereon, and a cutting blade 23 pivotally supportedand operatively related to said bar and guide, whereby the tape 24 whenplaced between the guide and bar'will be severed upon actuation of theblade. A lever 25 is pivotally supported upon the standard 20 and isoperatively related with the blade 23, which lever is actuated by asolenoid 26 through the medium of a connection 27. Springs 28 and 29 arepro- The controller for the shearing appliance A controller is providedfor the shearing appliance by means of which the blade 23 is actuatedperiodically in timed relation with the operation of the tapingappliance, with which taping appliance the controller is alsooperatively related, whereby the said controller is progressed throughits cycle of action concurrently with the first portion of that of thetaping appliance. The controller, (Figs. 7, 8 and 9) has a frame 32fixed to the under side of the top 2 of the bench, which frame includesa bracket 33. A cylindrical housing 34 is fixed upon the frame 32, and acoaxially mounted rotatable and longitudinally movable shaft 35 withinthe housing projects from one end thereof. Surrounding the shaft 35within the housing 34 is disposed a solenoid 36 by means of which theshaft 35 may be actuated longitudinally. A sleeve 37 fixed in one end ofthe housing 34 constitutes a bearing for the shaft 35 and also for adriving gear 38 which is loosely mounted upon said sleeve. A thrustbearing 39 is interposed upon said sleeve between the driving gear 38and the adjacent end of the housing 34, and a collar 40 fixed on saidsleeve retains the driving gear in proper position thereon. Upon theshaft 35 is fixed a clutch-wheel 41 that has frictional engagement withthe face of the driving gear 38, there preferably being a chafing ring42 disposed in the face of the driving gear with which the clutch wheelhas contact when in action.

In the arm 43 of the bracket 33 is fixed a stud 44 axially alined withthe shaft 35, and surrounding the abutting ends of said shaft and studis a spiral spring 45. The ends of the spring 45 are secured to theshaft and the stud, respectively by means of a pair of collars 46. Whenthe solenoid 36 is energized, the shaft 35 is moved longitudinallyagainst the force of the spring 45, and the clutch wheel 41 on saidshaft is brought into engagement with and is pressed against the chafingring 42 in the driving gear 38. Subsequent rotation of the shaft 35, asby means of the driving gear 38, is yieldingly opposed by the spring 45,and corresponding reactionary forces are thereby stored in said spring.These forces become effective when the shaft 35 is released upon thedeenergization of said solenoid, and cause the clutch wheel to bedisengaged from the driving gear and returned to its original position,or to the point of the commencement of its cycle.

The bracket 33 has fixed thereon an arm 4'7 in WhlCh is secured a sleeve48, and upon which sleeve is journaled a disc 49 and a worm-wheel 50. Aspiral spring 51 extends through the bore of the sleeve 48 and looselyaround the shaft 35, one end of said spring being secured to thewormwheel and its opposite end being similarly secured to the disc 49,whereby when the wormwheel is adjustably turned, said disc 49 iscorrespondingly moved through the medium of said spring. The disc 49 hasa post 52 projecting from its outer face, and the clutch wheel 41 has apost 53 that projects from its hub into the path of the other post 52,whereby the retracting movement of the clutch wheel imparted thereto byevolvement of the spring 45 is limited. The wormwheel 50 is adiustablyturned by a screw 54 disposed in a fork 55 that is fixed on the arm 4'7.In this manner an adjustable stop is afforded whereby the clutch wheel41 is arrested in its backward turning movement at any desired point ofits revolution. The spring 51, by torsional action thereof, absorbs theshock of the impact of the post 53 against the post 52, since saidspring permits of restrained turning movement of the disc 49 upon thesleeve 48.

The driving gear 38 (Fig. 3) is connected with the gearing 8 thatactuates the taping appliance through gearing 56 and a shaft 57 thatprojects from said gearing 8, the arrangement preferably being such thatas the shuttle of the taping appliance is revolved, the gear 38 of thecontroller is actuated at an inverse ratio to a proportionate extent,whereby numerous turns of the shuttle are made to one revolution of thegear 38.

The clutch wheel 41 has in its outer periphery a notch 58, (Figs. 7 and9) for the reception of a finger 59 that extends from the end of aswitch lever 60. The lever 60 is pivotally supported on a bracket 61that is secured to the frame 32. The finger 59 bears normally upon theperiphery of the clutch wheel 41 and the switch lever 60 is therebysustained in one of its positions, in opposition to a spring 62 attachedto said lever. When the clutch wheel 41 is turned so that its notch 58registers with the finger 59 the switch lever 60 is moved through theaction of the spring 62 to its opposite position.

0n the end of the lever 60 opposite the finger 59 is mounted a switchblade 63 that has engagement selectively with oppositely positionedpairs of switch contacts 64 and 65 accordingly as the switch lever ispositioned. The contacts 64 and 65 are mounted on a bracket 66 that isattached to the frame 32. A stop 6'7 secured to the bracket 66 serves tolimit movement of the switch lever 60 in one direction. Anelectro-magnet 68 is secured upon said bracket adjacent the lever 60, sothat when energized the magnet actuates the switch lever in oppositionto the spring 62. Thus, when the switch lever 60 is attracted by themagnet 68, the contacts 64 are electrically connected by the blade 63,and the finger 59 on said lever is withdrawn from the notch 58 in theclutch wheel, and said lever is sustained in such position by thecontact of the finger 59 against the face of the clutch-wheel 41 whenthe notch 58 is moved from receiving position. When, however, the magnet68 is deenergized and the clutch wheel 41, is so turned that its notch58 is in receiving position,

the finger 59 enters the notch, and the switch lever 60 is moved throughthe action of the spring 62 with the result that the blade 63 is movedfrom the contacts 64 and into engagement with the contacts 65, asindicated in Fig. 9.

The contacts 64 are electrically connected to the solenoid 36 throughconductors 69, so that when said contacts 64 are engaged by the blade 63the solenoid 36 is in circuit therewith. The contacts 65 areelectrically connected to the solenoid 26 of the shearing appliancethrough conductors 70, so

that when the latter contacts are engaged by the blade 63 the solenoid26 is in circuit therewith. The magnet 68 is electrically connected tothe conductors '71 and 72, (Fig. 10) through which electric current maybe supplied to the apparatus from a suitable source, (not shown) saidmagnet having a connection 73 with the conductors '72, and anotherconnection 74 with the conductor '71 through a switch '75, which switchconveniently may be controlled by a pedal mechanism '76.

The arrester for the taping appliance In the machine shownln thedrawings, means are provided by which the shuttle 5 of the tapingappliance may be caused to stop at that stage where the gaps in theshuttle and race-way 4 register. The disclosed embodiment of this meanscomprises a plunger 77 operated by a solenoid 78, the plunger having anarm 79 which is movable into the path of a block 80 fixed on the rim ofthe clutch member 10, (Figs. 1, 2 and 3) so that rotation of said clutchmember is stopped when the block 80 engages said arm 79. A contractingspring 81 attached at one end to the bench, and at its opposite end withthe arm 79 tends to hold the plunger 77 in its rearmost position, sothat the arm 79 is held out of the path of travel of the block 80. Acompression spring 82 surrounds the plunger between the arm 79 and theadjacent end of the solenoid 78, and serves. to cushion the thrust ofthe plunger 77 when actuated by the solenoid.

The block 80 is positioned on the clutch member 10 at such point thatwhen rotation of the clutch member is interrupted by the engagement ofsaid block with the arm 79, the gap in the shuttle 5 will have reachedand will register with the gap in the race-way 4. In this manner, whenthe taping appliance is stopped, said gaps will be open for theadmission of the coil to be taped. The solenoid 78 is electricallyconnected to the conductors 71 and 72 through conductors 8374 and 84,respectively, and is controlled by the switch 75.

The electrically operated controlling means Fig. 10 of the drawingsillustrates diagrammatically one suitable electrical control circuit forthe taping machine shown in the drawings. One terminal of the solenoid36 of the controller for the shearing appliance is connected by aconductor 85 to a relay switch 86 of any suitable type such as is shownin Fig. 11 which has an annature 86 that is yieldingly sustained ineither closed or open position by a spring-pressed plunger 86" thatbears against a roller 86 The switch 86 is electrically connected to theconductor 71 through the conductors 87 and 88 and the switch 75, and anintermediate switch 89. The other terminal of the solenoid 36 isconnected to the conductor 72 through conductors 69 and 90 which arecontrolled by the switch contacts 64. One terminal of the solenoid 26 ofthe shearing appliance is connected to the conductor 71 throughconductors 91 and 85, relay switch 86, conductor 87, switch 89,conductor 88 and the switch 75. The opposite terminal of the solenoid 26is connected to the conductor 72 through connections 70 and 92 and theswitch contacts 65.

The relay switch 86 is closed through the action of a magnet 93, oneterminal of which is connected to the conductor 71 through conductors 94and 74 and the switch 75, and the other terminal of which is connectedto the conductor 72 through a conductor 95. The relay switch 86 isopened through the action of an electromagnet 96, one terminal of whichis connected to the conductor 71 through a conductor 97 which iscontrolled by a switch 98, hereinafter referred to,

conductors 87 and 88, and the switches 89 and 75.

The switch 98, (Figs. 5, 6 and 10) is mounted in juxtaposition with theshearing appliance, adjacent the solenoid 26 thereof, and is operated bya switch member 99 fixed on the member 27 so that when the solenoid 26is energized and the member 2'7 and the blade 23 are actuated, theswitch 98 is closed by the member 99, which has the efl'ect of closingthe circuit through the magnet 96, causing the relay switch 86 to open.

The switch 89, (Figs. 4, 5, 6 and 10) is mounted on the standard 20 ofthe shearing appliance which is located adjacent the housing 1 of thetaping appliance. The standard 20 has pivoted in its upper part a gate100 which is disposed so as to close the gap 6 in the race-way 4, and toserve as a guard for the shuttle 5. A retracting spring 101 connectedwith the gate 100 and the standard 20, tends to hold the gate open orclosed accordingly as positioned by the operator.

Referring particularly to Fig. 4, a lever 102 pivoted on the standard 20has operative relation with the switch 89, and a retracting spring 103connected with said lever and the standard 20, normally tends to closesaid switch. The gate 100 when turned to its open position bears againstone end of the lever 102, causing said lever to tilt and open the switch89, which causes the circuit through the connection 88 to be broken.

The operation In the operation of the machine shown and described, thedriving pulley 13 is actuated continuously by a means such as a motor104 through the medium of a suitable power transmitting mechanism 105,and the tape 24 is supplied from a spool 106, (Fig. 2) through guides107 and 108, to a point above the bench and back of the taping appliancewithin convenient reach of an operator stationed in front of the tapingmachine. The tape guides 107 and 108 preferably will be of suitable formsuch as will prevent the tape from becoming twisted as it is fed to thetaping appliance, and from becoming otherwise disarranged when severedby the shearing appliance.

The main switch 75 when in normal position connects the conductor 71 andthe conductor 88. When the pedal 76 for the switch 75 is depressed,connection between the conductor 71 and the conductor 88 is broken,while connection is established between the conductor 71 and theconnection 74, whereupon the magnet 68 becomes energized and the switchlever 60 is actuated, so that the finger 59 of said lever is Withdrawnfrom the notch 58 in the clutch wheel 41, and the blade 63 is moved intoclosing relation with the contacts 64, and also the magnet 93 isenergized causing the relay switch 86 to close.

The clutch wheel upon being thus released, (Figs. 7, 8 and 9) is turnedbackwardly through the torsional reaction of the spring 45 to its normalposition, where it is stopped by the engagement of the post 53 with thepost 52. The lever 60, because of the engagement of the finger 59 withthe clutch wheel 41, is maintained in the position to which it wasattracted by the magnet 68, so that the circuit is held closed throughthe contacts 64 and the blade 63.

The solenoid 78 also is simultaneously energized, so that the arresteris moved into engaging position with respect to the block 80. At thisinstant, by momentarily depressing the clutch pedal 15, the drivingpulley 13 is moved into engagement with the clutch wheel 10, whichthereupon is turned to an extent limited by the engagement of the block80 with the arm 79 of the arrester. The switch 75 is then returned toits normal position by releasing the switch pedal 76, thereby openingthe circuit through the conductors 71 and 74, and reestablishing acircuit through the conductors 71 and 88. In this manner the variousmembers oi. the apparatus are set at their respective points forcommencing the cycle of'operation of the machine.

Initially, the tape 24 is drawn by the operator between the guide 21 andthe cutting bar 22, and is applied to the coil, (not shown) to be taped,which coil is then inserted through the gaps in the race-way and theshuttle in proper position to receive the tape in the customary manner.The gate 100 is then closed over the gap in the raceway, which permitsthe switch 89 to be closed automatically through action of the springdrawn lever 102, whereupon the solenoid 36 of the controller becomesenergized and the clutch wheel 41 is thereby drawn into engagement withthe 'driving gear 38. The clutch pedal 15 is next depressed to engagethe driving pulley 13 with the clutch member 10, whereupon the shuttleof the taping appliance and the driving gear 41 of the controller areactuated through the intervening mechanism 9 and 56 connectedrespectively therewith.

During the progress of the shuttle, the tape is drawn from the spoolinto the taping appliance and applied to the coil as said coil ismaneuvered by the operator. As the taping operation progresses, theclutch wheel 41 through its engagement with the driving gear 38 iscorrespondingly turned upon its axis in opposition to the torsionalresistance of the spring 45 until the notch 58 in the clutch wheelreaches and receives the finger 59 of the lever 60. The lever 60 is thenactuated by the spring 62 into its opposite position, whereupon thecircuit through the contacts 64 is broken, and a circuit is establishedthrough the contacts 65. Thus, the circuit through the solenoid 36 isopened and the clutch wheel 41 released from engagement with the drivinggear 38.

The circuit through the solenoid 26 of the shearing appliance iscompleted, and the shearing appliance is actuated, whereupon the tape issevered and the switch 98 is closed. Upon the closing of the switch 98the magnet 96 is energized which causes the relay switch 86 to re-openand thus break the circuit through the solenoid 26, re-opening theswitch 98. Operation of the taping appliance is continued until thesevered portion of tape, accumulated upon the shuttle, has been appliedto the coil, after which the gate is opened and the main switch is againmoved into contact with the conductors '71 and 74, causing the resettingof the apparatus preparatory to a repetition of the cycle of operation.

Preferably, the controller for the shearing appliance is so constructed,that by adjustment thereof severance of the tape by the shearingappliance may be made to occur at such period in the cycle of operationof the apparatus, that the length of the severed portion of the tapethat is drawn into the taping appliance may be varied suitably asrequired for coils of different sizes. Such arrangement is included inthe controller for the shearing appliance, wherein the provision is madefor adjustably positioning the post 52, so that the backward turningmovement of the clutch wheel 41, when released from engagement with thefinger 59, is limited more or less in extent. This is accomplished byturning the adjusting screw 54, such movement, through the medium of theworm-wheel 50 and the spring 51, being correspondingly imparted to thedisc 49. In this manner the travel of the clutch wheel 41, when turnedby the driving gear 38 from the commencement of its cycle to the pointwhere reception of the finger 59 into the notch 58 place, may beadjustably varied and the operating period of the shearing appliancethus timed to occur sooner or later accordingly. By means of suchadjustment, the length of the tape supplied to the shuttle may beregulated, so that the amount applied to each coil will be justsufficient to form a complete covering therefor.

It will be understood that the invention may be variously modified andembodied within the scope of the claims.

I claim:--

1. The combination in an apparatus for applying tape to electricalcoils, of ataping appliance having a race-way and an annular shuttletherein, each provided with a gap; driving means for said shuttleincluding a control clutch; an arrester operatively associated with saidclutch whereby said shuttle may be stopped in the raceway at a pointwhen its gap registers with that in said raceway; means for supplyingtape to said taping appliance; a shearing appliance for automaticallysevering the tape supplied from said last mentioned means; a controllerfor said shearing appliance; electrical means operatively associatedwith said arrester, shearing appliance and controller for actuating thesame respectively; and manually operated means for controlling saidelectrical means.

2. The combination with an appliance for winding tape upon electricalcoils, which appliance includes a clutch controlled driving meanstherefor, of an arrester operatively associated with the clutch of saiddriving means; means for supplying tape to said taping appliance; meansfor automatically severing the tape supplied from said last mentionedmeans; a controller for said severing means; means permitting adjustmentof said controller while the appliance is operating to vary the lengthof tape severed; electrical actuating means operatively associated withsaid arrester, shearing appliance and controller; and manually operatedmeans for controlling said electrical means.

3. In apparatus having a tape winding means, the combination of anelectrically actuated stop appliance therefor, and an electricallyactuated tape shearing means, an appliance for controlling the operationof said shearing means, comprising a clutch mechanism operativelyconnected with said winding means, an electro-magnet for controlling theoperation of said clutch; an electric switch engaged and released bysaid clutch mechanism, there being a pair of contacts closed only whilesaid switch is engaged respecting said mechanism, and another pair ofcontacts that are closed only while said switch is released, a secondelectro-magnet for moving said switch into engaged position, a circuitfor said second magnet and said stop appliance, a second circuit forsaid first magnet, including the former pair of contacts, a thirdcircuit for said shearing appliance including the other pair of saidcontacts, and a manually operated switch through which energy may besupplied to the first mentioned circuit when in one position, and to theother of said circuits when in its opposite position.

4. The combination in apparatus having a tape winding means and anelectrically actuated tape shearing means, of an appliance forcontrolling the operation of said shearing means, comprising a clutchmechanism operatively related with said winding means; an electro-magnetfor governing said clutch mechanism; a switch engaged and released bysaid clutch mechanism, there 15o being a pair of contacts closed onlywhile said switch is engaged respecting said mechanism, and another pairof contacts that are closed only while said switch is released, a secondelectromagnet for moving said switch into engaged position, a circuitfor said second magnet, a second circuit for said first magnet includingthe former pair of contacts, a third circuit for said shearing applianceincluding the other pair of said con tacts, and a manually operatedswitch through which energy may be supplied to the first mentionedcircuit, when in one position, and to the other of said circuits when inits opposite position.

5. Included with the substance set forth in claim 4, a relay switchinterposed in said second circuit, closing and opening magnets for saidrelay switch, said closing magnet having a connection whereby said relayswitch is closed when said first mentioned circuit is energized, and aswitch-controlled connection for said opening magnet associated withsaid second circuit and said shearing means in such a manner that saidrelay switch will be opened upon the operation of said shearing means.

6. Included with the substance set forth in claim 4, a relay switch forcontrolling said second circuit, means associated with said firstmentioned circuit for closing said relay switch, and means operated bysaid shearing means for opening said relay switch. 7

7. Included with the substance set forth in claim 4, a relay switch forcontrolling said second circuit, means for automatically closing saidrelay switch when the first mentioned switch is engaged, and means forautomatically opening said relay switch when said first mentioned switchis released.

8. Included with the substance set forth in claim 4, a movable shuttlegate for said winding means, and another switch connected in said secondcircuit and operatively connected with said gate whereby said secondcircuit may be broken by movement of saidgate to open position.

9. The combination in apparatus having a tape applying means and anelectrically operated tape severing appliance, of a controller for saidappliance having a rotatable driving member operatively associated withsaid means; a

shaft having rotatable and longitudinal movement, axially alined withsaid member; a clutch Wheel fixed on said shaft and engageable with saidmember; a spring device disposed to restrain rotary and longitudinalmovements of said shaft; an electro-magnet for causing engagementbetween said driving member and clutch wheel opposed by said springdevice; an adjustable stop device and engaging means acting to limitrotary movement of said clutch wheel; a switch engaged and released bysaid clutch wheel; a second electro-magnet for moving said switch intoengaged position; a circuit for said magnet; a second circuit for saidfirst magnet closed by said switch only when in engaged position; athird circuit for said shearing appliance closed by said switch onlywhen in released position; and a manually operated switch through whichcurrent may be supplied selectively to said first mentioned circuit andto the other circuits.

10. The combination in apparatus having a tape applying means and anelectrically operated tape severing appliance, a controller forsaidappliance having a driving member operatively associated with saidmeans; a clutch engageable with said member and having rotatable andlongitudinal movement; means normally tending to maintain said clutch indisengaged position; an adjustable stop mechanism for limiting rotationof said clutch from its normal disengaged position; electrical means formoving said clutch into engagement with said driving member; a movableswitch engaged and released by said clutch; meansfor moving said switchinto engaged position; and circuits for said electrical means and saidsevering appliance controlled selectively by said switch.

11. In a tape-wrapping apparatus, the combination of means having adiscontinuous, subs':antially annular raceway, a tape-wrapping shuttlemounted in said raceway, driving means for said shuttle to cause theshuttle to travel in the raceway, means for substantially bridging thegap in said raceway, and control means for said'driving means,automatically operative when said bridging means is moved out of thegap, to interrupt further movement of the shuttle in the raceway.

EDWARD SNYDER.

